Patrick SIMON Météo-France - Toulouse ROC & RODB manager – DMG ChairMETP/MIE member, Workstream 1 coordinator
METNO PROCEDURE HARMONIZATION
AFI IWXXM Workshop,
Nairobi 15-16 Sept 20201
METNO PROCEDURE (1/x)
Main goal
Improve interregional (& regional) coordination on the notification of changes for OPMET data
Building a global mechanism for Notification
- WG-MIE would like to propose to all ICAO regions an harmonization of METNO procedures to assure a global and an efficient mechanism of notification
- First phase : harmonize EUR and APAC existing procedures
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METNO PROCEDURE (2/x)
General principles
• Defining a regional focal point and/or a regional METNO team
• Request for change sent by a State to the regional focal point/regional METNO team (which
could be ICAO regional office or regional group )
• Regional Internal way of dealing with the request ( e.g. verifying it follows the RANP )
• Acceptance after a period to be determined : one AIRAC cycle is proposed
• Communication of the acceptance internally to the region and to the other regions focal point
• Sequence based on the AIRAC cycles.
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METNO PROCEDURE (3/x)
- Necessity to define the same structure of notification sent at the same date JJ before a new AIRAC cycle
- Defining the same syntax of the METNO messages allows automatic processing in all regions and is well understood
- regional dissemination list and to the other regional focal points (email) and/or agreed IROG addresses (AFTN, AMHS)
The header of the METNO bulletin is proposed to be NOXX31 CCCC YYGGgg, where
• XX is a general area designator (example : EU for EUR, AF for AFI …)
• CCCC is the location indicator of the regional FP Centre
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METNO PROCEDURE (4/x)
METNO statements for registration and updating of OPMET / IWXXM data:
• ADDRPT / RMVRPT: for adding / removing OPMET data in an already registered bulletin.
• NEWBUL / DELBUL: for registering a new / unregistering OPMET bulletin (and its contained
data).
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METNO PROCEDURE (7/x)
• Adding IWXXM METARs/TAFs to a registered bulletin will by default result in adding the
equivalent TAC METARs/TAFs for their parallel distribution. There can be no IWXXM data without
any equivalent TAC-formatted version of the data.
• The Focal point and/or regional group receives update requests:
- Preferably via ROC, but also from NOCs.
- After authentication, sort updates based on suggested implementation date: AIRAC is highly
recommended.
- Compiles AIRAC METNO - or EXTRA METNO for intermediate updates with immediate
implementation of new or expiring bulletins.
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METNO PROCEDURE (8/x)
Key issues to be considered for the management of AFS data traffic volumes are:
- Avoid data duplication.
- Authenticated data only (received by AFS )
- eANP required data (AOP) & Agreed exchanged Non-AOP data
- Differentiate bulletins for AOP / bulletins for non AOP agreed exchanged data
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• Questions ?
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